This presentation investigates subtracting 0 & 1. This PowerPoint helps students visualize subtracting 0 and 1 using a number line. All combinations are presented with appropriate pauses for the kids to join in. Each subsequent slide presents a different problem using minus 0 facts. Each slide pauses for the students to answer. While not an overview of 1.OA.6, this presentation will cover the minus 0 and 1 facts as a lesson with white board, choral or individual response.